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/*
* Copyright 2017-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
package kotlinx.serialization.features
import kotlinx.serialization.*
import kotlinx.serialization.EncodeDefault.Mode.*
import kotlinx.serialization.json.*
import kotlin.test.*
class SkipDefaultsTest {
private val jsonDropDefaults = Json { encodeDefaults = false }
private val jsonEncodeDefaults = Json { encodeDefaults = true }
@Serializable
data class Data(val bar: String, val foo: Int = 42) {
var list: List<Int> = emptyList()
val listWithSomething: List<Int> = listOf(1, 2, 3)
}
@Serializable
data class DifferentModes(
val a: String = "a",
@EncodeDefault val b: String = "b",
@EncodeDefault(ALWAYS) val c: String = "c",
@EncodeDefault(NEVER) val d: String = "d"
)
@Test
fun serializeCorrectlyDefaults() {
val d = Data("bar")
assertEquals(
"""{"bar":"bar","foo":42,"list":[],"listWithSomething":[1,2,3]}""",
jsonEncodeDefaults.encodeToString(Data.serializer(), d)
)
}
@Test
fun serializeCorrectly() {
val d = Data("bar", 100).apply { list = listOf(1, 2, 3) }
assertEquals(
"""{"bar":"bar","foo":100,"list":[1,2,3]}""",
jsonDropDefaults.encodeToString(Data.serializer(), d)
)
}
@Test
fun serializeCorrectlyAndDropBody() {
val d = Data("bar", 43)
assertEquals("""{"bar":"bar","foo":43}""", jsonDropDefaults.encodeToString(Data.serializer(), d))
}
@Test
fun serializeCorrectlyAndDropAll() {
val d = Data("bar")
assertEquals("""{"bar":"bar"}""", jsonDropDefaults.encodeToString(Data.serializer(), d))
}
@Test
fun encodeDefaultsAnnotationWithFlag() {
val data = DifferentModes()
assertEquals("""{"a":"a","b":"b","c":"c"}""", jsonEncodeDefaults.encodeToString(data))
assertEquals("""{"b":"b","c":"c"}""", jsonDropDefaults.encodeToString(data))
}
}
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